Can you reply with the URL to your blog so we can take a look?
Importing is straight forward, it takes the URLs from PodPress and imports them. There are only two cases where you can run into problems:
- Switching from a very old version of PodPress (older than version 7.x). The data is not stored correctly and those versions of PodPress were very buggy.
- If you did not have a valid URL entered into your PodPress Settings > Media URL field. PowerPress takes that value and adds the media URLs when performing the import.
Last, PowerPress has an option when doing the import to "Verify" the URL is valid before importing. If those URLs that have the invalid characters are invalid, PowerPress with the Verify option turned on shouldn't import them.